Calendering machine



Sept. 8, 1925. 1,552,559

G. i... HAMMOND ET AL CALENDERING MACHINE Filed July 6, 1922 3Sheets-Sheet 1 Eg, j

Sept 8,' 1925.

G. L. HAMMOND ET AL CALENDERING MACHINE Filed July 6. 1922 3Sheets-Sheet 2 IN VEN TORS ,Afa/mond and BY VMWW ATTORNEYS.

Sept. 8, l19125.

G. L. HAMMOND ET AL CALENDERING MACHINE Patented Sept. 8, 1925.

unirse stares 1,552,559 PATENT QEFQ.

GUY L. HAMMOND eNn winnen marrones. er nmnsnronr, coNNnc'rroufr,AssrGNons To THE BLACK noon ce., or BnIDenPoR/r, CONNECTICUT, a con-PORATION 0F CONNECTICUT.

CALENDERING MACHINE.

Application filed July 6, 1922. Serial No. 573,218.

T 0 all whom t may con/cern:

Be it known that GUY L. HAMMOND and WILLIAM Nici-loisirs, a citizen ofthe United States and a subject of the King of Great Britain,respectively, and residents of Bridgeport, in the county of Fairiieldand .State of Connecticut, have invented certain new and usefulImprovements in Calendering lVachines, of which the following is aspecification.

This invention relates to improvements in calendering machines, andparticularly ma.- chines of this character for shaping, forming andcalendering material such as rubber composition, asbestos and the like,into strips, bars or sheets, for instance, like that employed on brakelinings or sheet packing, asbestos or the like.

An object is to provide a machine in which the material may be-shaped orfinished with a high degree of accuracy, as todimensions and uniformity,and in which the density and surface desired may be maintained orregulated to any desired standard.

A further object is to provide a calibrated gauge, by which the accuracyof the calendering may be adjusted and maintained within the closestlimits, and to permit of the adjustment of such means as desired, toaccommodate and calender sheets and strips of varying thicknesses andWidths.

Another object is to enable the adjustment and setting of the machine soasto insure the reliable production of materials of definite andstandard dimensions and uniform quality, further to provide any desireddegree of compression upon the stock by the calendering rolls andparticularly to adjustably position the several rolls in cooperatingrelation, to the end that the strip produced will have both perfectedges and side faces.

Other objects are simplicity, freedom from parts liable to get out oforder and the easy removal and replacement of wearing elements.

TVith the above and other objects in view, an embodiment of theinvention is shown in -the accompanying drawings, and this em- Fig. 1 isa front elevation of a calendering machine embodying the invention;

Fig. 2 is an end view thereof;

Fig. 3 is a fragmentary detail view, partially in front elevation andVpartially in vertical section of the upperA calendering roll, and themounting, driving and adjustment means therefor; and i Fig. 4f is ahorizontal sectional view along the line H of Fig. l.

Similar reference characters indicate corresponding parts throughout theseveral iigures of the drawings.

`The machine, according to the present embodiment of the invention,comprises a` rectangular bed-plate 10, supported upon end standards 11and mounting a pair of vertically-disposed bearing frames v12 and 13,braced and connected at their upper ends by a tie-beam or brace 14.

An electric driving motor lvis mounted upon a support 16 that, may besecured to the end standards and in spaced relation to the floor. Thedriving shaft 17 has a bearing in the end of a housing 18, bolted to thestandard 11 at one end, the shaft being provided within the housing witha bevel pinion 19, meshing with a bevel gear 20, mounted upon a verticalshaft 21; The shaft 21v has a flanged thrust-bearing ,adjacent itsreduced end 22 that is journaled in the base of the housing, the bore ofthe bearing being bushed, as at 23. This shaft is also journaled in abushed bearing portion`24V in the top of the housing and includes a`collar 21 that is positioned against the housing and forms a thrustbearing against any lifting tendency of the gear 2O and its shaft. Thehousing is of the two-piece separa-ble type, to permitaccess to thegears whendesired.

The upper end portionof the shaft 21 is connected by a coupling 37 witha Worm shaft 37 which is provided with a pairof spaced right and' leftworms 25 and 26v (Fig. 2). The worm 25 is enclosed in a cylindricalhousing 27, having an integral gearenclosing extension 28, ,and alsoprovided with integral plate portions 29 and 30 bolted to the frame 12.A removable cover plate 81 is mounted upon the outer side of the eX-tension 28; and at its inner side, there is provided a bearing portion32. in which is'journaled one end of a horizontally-disposed shaft 33,provided Within the housing with a worm gear 34C, meshing. with. thelower worm.25. ylllhegother'end ofthe'y shaft 33v is journaled in abearing portion 35 of the frame 13, and adjacent said frame, and be-ftween=it andthe Hamel-3, thereV is mountedy thereon an-adjusta-blelowercalender roll" A tubular. post27a having a` flangedlower l endportionfis secured-to the. lower end ofthe housingg27byrmeansofscrews27b, and ex tends-:through and above. said` housing toforma guideupon which. a-second cylindrical"v housing 38 is,.slidablymounted. This post also: servesfas. a: bearing. and inclo'sure for theworm shaft 37 a. andworms 25 and26.- A. gearfenclosing.. extension 39isl formed upon. oneside ofthe hou-sing'38, being enclosed at its outerside by avremovable coverplatelO. A slide-block.41. forming anVVadjustablebe'aring is secured'v toithe inneri side off theextension 39byy screws 12and is vertically movable ina. slideway 13 pro-videdinftheframe12.l Guide flanges 415and46 yare formed Aupon-the slideblock, which engage the lforward edgesof. the slide-way, whileremovable.b guide platesA 47 and 48- are securedltothe inner. side'oftheblock 49, and engage. the inner edges of the slideWay.

Alcal'ender roll'shaft 50 is j ournaledat one `end. in the4-Slideebloclr 41 .being provided at'its. projecting reducedextremity 51with a worm. gear 52,that'meshes with. and is driven by the. worm 26.The other end of the shafit()A isnjournaledina slidefblock 53, guidedvtoliave;verticalmovement in. a slideway 5.4i oflth'ei frame13.; f

An; upper vertically adjustable calender roll'. 5.6 is.adjustablymounted: upon the l shaft 5.0;? in: superimposedfandf adjustabl'y` spaced relationto the roll` 36positioned therebene'atli.. Boththe rolls. 36 and 56' are adjustable:lengthwise upon. their respectiveshafts by .means ofthe shafts being.V threaded as. at Mylandfprovidedwith. nuts. 55 which are threadably mountedupon the portions 44; 4of theshaftand are.. set againstthe sides ofthe rolls.. These roll'sareidriven to. cooperate as surfacing andcom'pressing rollstheir spacing-Xb'eing. .adjustable through.` raisingE or lowering the. upper roll 5.6,.by meansipresently to. bede'scribed.

` edge-.fonming calendering. roll` 57 spa-ns: the z space..between.`the. rolls 36and 56, engagingl the: side surfaces.- thereof, and ismountedupon a. vertical shaft .58., ysupported inf laterallydisposedl'bracliets v59 and. 60 secured'. to. tha frame. 12;V A'.bevelgear16l. is elevated linea-the lbwen end; ofi the Shaft 55.. ebevel? @tive geerf 62.

securedupon the ylower rollshaft 33, todrive the roll 57. at a surfacespeed corresponding to the surface speed of the rolls 36 and 56.

The upper calender roll 56 is adjustable vertically, byl means ofy apairy ofV vlifting screws 63` and 6&1,v threadedy to" engage the body ofthe gears/'71' and 72 mounte'di'in the bevelfgears76 and-7 7 mountedupon a hori.-

zontalz shaft 73 rotatably. Vmounted in bear; ing.,A bracketsV 74.. and7 5, abovethe brace' beam. 14.-. This shaftff 7.3 is provided at itsouter end with a'removable crank 78. adapt ed for manual turning oftheshaft. which operation through the` bevel. gear and. screwconnections raises or lowers the calender roll. 56,. depending upon the.operationqof turning..

rPhe shaft 73 hasmountedthereon a disk 793 andv is provided.` at its'rperiphery with calibrations over which ai fixed -indeX-80, mounted uponthe brace-beanr 14, is disposed to indicatefthez'degree of turning oftheshaft,Y and thereby,jthe relative spacing of. the. calender rollsandv consequent thickness of product when rolled.A

A support 81V is mounted upon the frame 13 anda standard 82,.beingprovided along its upper. surface witlr a longitudinal slotted slideavay83., inwhicha slide 84 is'disposed andretained by means of removableretainingstr-ips85 and 86. A feed screw 87 is se cured to the headVandextends. throughl a longitudinally fixed nut 88., rotatably mounted in.-a bearing 89y ofy thel support 81, a Y

graduated crank-wheel 90 being fixed to thenut` to permit its. manuallturning. AV pointer. 67 is securedto the slide and-isdisposed toward`the crankwheelinpositionto bereadin connection withthe graduationsupon. thewheel 96 to. determine the proper adjustment for certainwidthsofstrips to be rolled... Y A

Al. plate.91 is-secured ltothe head 311 and extends inspacedy relationabove the projecting baseportion ofthe slide and formfing with saidportion a support for thein.- tercihangeable.y horizontal.y roll A that.isremovably positionedinthe. recess.92\,.the ini vpin.9.3 is. positionedto. form.r a bearing upon which rolls A fof i diiferentsize andthickness are removably supported. to. -ca1 e1i1.-l2f11?y Strips ner.operativeedge portion. of saidroll open ating between the beforementioned calen-v of b-rake lining and other material of differentthickness and widths, the pin 93 being held in position by means of aset screw 95, as shown in Fig. 1.

The roll A is interchangeable with similar rolls of differentthicknesses and as the degree of its insertion between the rolls 36 and56, permits of the production of any desired width of strip or sheet itis possible by changing this one element of the machine to producestrips or sheets of any de.

sired thickness.

In operation, the strip or sheet of material which may be of anysuitable compressible material, as rubber composition, asbestos, or thelike, is continuously fed through the pass, formed by the upper andlower rolls 36 and'56, and the edging rolls 57 and A, therebycompressing and forming it.

The product of the machine is uniform, as to finish and density, and its'upper and lower surfaces and edges are calendered to an exact standardor uniformity. The formation of burs, fins, or other irregularities isentirely prevented. The parts are such that they will not readily getout of order, they may be easily dismounted and replaced and theiradjustment may be brought about with the greatest precision.

I have illustrated and described a preferred and satisfactory embodimentof the invention, but it is obvious that changes may be made thereinwithin the spirit and scope thereof, as defined in the appended claims:

l. In a machine of the character described, a pair of spaced calenderingor forming rolls, adapted to receive a strip of work between them, andan edge calendering or forming roll having its periphery spanning thespace between the first rolls, and engaging the side surfaces thereof,and a second edge forming roll having its edge disposed between theperipheries of the pair of spaced rolls and adjustable between them andtoward and from the first edge forming roll.

2. In a machine of the character described, a pair of spaced calenderingor forming rolls, adapted to receive a workpiece between them, meansadapted to simultaneously and equally rotate said rolls in oppositedirections, an edge calendering or forming roll spanning the spacebetween said first rolls and engaging the side surfaces thereof, andmeans for driving said edge forming roll at a surface speedcorresponding to the surface speed of said first rolls.

8. In a machine of the character described, a pair of spaced calenderingor forming ro-lls, adapted to receive a workpiece between them, meansadapted to simultaneously and equally rotate said rolls sidesurfacesthereof, means for adjusting f one of said Vrolls relatively tothe other to vary their spacing, and-meansidriving said edge formingmeans at a surface speed equal to t-he surface speeds of the formingrolls.

5. In a machine of the character described a pair of spaced calenderingor forming elements inc uding a roll, adapted to receive awork-piecebetween them, one of said elements being fixed against bodily transversemovement, edge-forming means having its surface extending between theperpheries of the elements, andl means for moving said non-fixed firstfelement toward or away from said fixed element, andl meansinterchangeably Vmounting' the edge forming means and providing for itsladjustment between the rolls. 1

6. In a-machine of the character described, a pair of spacedcalenderingor forming rolls, adapted to receive a work-piece betweenthem, parallel shafts supporting said rolls, spiral gears upon saidshafts, a drive shaft at right angles to said parallel shafts, and rightand left worms upon said drive shaft meshing with said spiral gears, anedge calendering roll spanning the space between the said first rollsand engaging the side surfaces thereof, and gearing between said edgecalendering roll and one of said first rolls for driving said edgecalendering roll at a surface speed corresponding to the surface speedsof said first rolls.

7. In a machine of the character described, a pair of spaced calenderingor forming rolls, adapted to receive a work-piece between them, parallelshafts supporting said rolls, one of said rolls being adapted to beadjust-ed toward or away from said other roll, spiral gears upon saidshafts, a drive shaft at right angles to said parallel shafts, and rightand left worms upon said drive shaft meshing with said spiral gears, oneof said gears adapted to roll upon its worm during adjusting movement ofthe roll connected therewith, an edge calendering roll spanning thespace between the said first rolls and engaging the side surfacesthereof, and gearing between said edge calendering roll and one of saidfirst rolls for driving said edge calendering roll at a surface speedcorrespondingto the surface speeds of said firstA rolls. Y'

8l In a machine Iof thefcharacterdescribed, a pair of spaced calenderingor forming rolls, adapted to receive aV work-piecebetween them, parallelshafts supporting said rolls, one of said rolls being adapted to beadjusted toward or away from-said other. roll, spiral gears upon saidshafts, a drive shaft at right anglesto said parallelshafts, right' andleft worms upon said drive shaft mesh. ing with said spiral gears, oneof said'gears adapted to roll.- upon its worm, during adj usting`movement of the roll connected therewith, and housings for said wormsand gears, one ofsaid housings being-movable with the adjusting movementofv said roll, an edge calenderingroll spanning lthe space between thesaid `first rolls and'engagingthe side surfaces thereof, and. gearingbetween said edge calendering rollv and one of said first rollsfordriving saidedge calendering rolllat a surface speed corresponding tothe surfacespeeds ofsaid 'first rolls.v

9. Ina machine of theI characterdescribed, a pair of spacedcalenderingorforming elements, adapted to receive a work-piecebetween them, an edge.calendering or formingelement having its surface spanning the spacebetween said first elements, edge cal.; endering or forming; means.rotatably supp'orted'between saidelements, and means for shiftingsaidlast means to Avary thespace between said elements and said edgeforming' elements.

10. In a machine. of'V the character dev scribed, a plurality-ofspacedcalendering, or

forming elements, adapted to receive a,workpieceL between them, edge`calendering or forming means, Van adjustable supportthere-z fore, and apair of cooperating separable members. carried by said supportandadapted to rotatably mount said last means.vv l

11;.In a machine offthe/ vcharacter def scribed,V a pair ofspacedcalendering or forming elements each including aroll, and

adapted to receive a worlrzpiece' between them, edge forming means attheside of said f i rolls, means for rotatingsaid elementsand formingelements each including` a roll, t

means for rotating said elements and with the-m the rolls, an edge'forming means at one side of the rolls, and7 meansto drive theedge-forming' element from onevof said call endering or forming elementsand at the same rateofsurface `speed as4V that of the rolls. Y' f Signedat Bridgeport in 1 the county of Fairfield and State of Connecticut this24th Y day of'June, AD., 1922.

. e-UY L. HAMMoND.-

WILLIAM NICHOLAS;

